Exploratory Factor Analysis Research Instrument Confidence Attitude Toward Students

This article examines the analysis of the validity of constructs on an instrument. The instrument used was a questionnaire about the students' self-confidence. This analysis is done in order to know what factors affect the attitude of confidence to students. Analysis of construct validity is done by exploratory factor analysis with the help of SPSS program version 22. Quantitative descriptive research is used in this research. The number of samples used was 50 respondents. The results of this study indicate that 1) In the exploratory factor analysis performed, the value of KMO of. 588 which means the sample used as much as 50 already meet the adequacy. 2) Insufficient MSA value >.50 is 3, 4 and 12 so it needs to be re-analyzed. The value of the MSA has qualified after the analysis without the three items. 3) Considering the value of communality >.50, then points 2 and 11 do not qualify with each value of 0.485 and 0.477 means it needs to be re-analyzed. After re-analyzed, the value of KMO, MSA and communal have been fulfilled. 4) Testing with exploratory factor analysis, there are 4 factors of research instrument self-confidence to the student with total variance that is explained equal to 65.806% from result of measurement. Of the four factors obtained, it can be grouped based on the factor load more than.05. Factor 1 contains points 1, 10, 13 and 17. In Factor 2 contains points 8, 14, 15 and 18. Factor 3 contains items 5, 6 and 9 and factor 4 contains items 7 and 16. Based on factor loads after rotating, naming the four factors each is courage, persistence, optimism and life challenge.